I have the same problems.
I can’t insert a text link because my scrollbar disappears.
Javascript errors:
Uncaught ReferenceError: wpseoPostScraperL10n is not defined
at A (wp-seo-post-scraper-410.min.js?ver=4.1:1)
at HTMLDocument.F (wp-seo-post-scraper-410.min.js?ver=4.1:1)
at i (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,underscore,jquery-ui-widget,jquery-ui-positi…:2)
at Object.fireWith [as resolveWith] (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,underscore,jquery-ui-widget,jquery-ui-positi…:2)
at Function.ready (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,underscore,jquery-ui-widget,jquery-ui-positi…:2)
at HTMLDocument.K (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,underscore,jquery-ui-widget,jquery-ui-positi…:2)
wp-seo-post-scraper-410.min.js?ver=4.1:1 Uncaught TypeError: Cannot set property ‘leavePostNameUntouched’ of undefined
at HTMLDocument.<anonymous> (wp-seo-post-scraper-410.min.js?ver=4.1:1)
at HTMLDocument.dispatch (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,underscore,jquery-ui-widget,jquery-ui-positi…:3)
at HTMLDocument.r.handle (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,underscore,jquery-ui-widget,jquery-ui-positi…:3)
at Object.trigger (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,underscore,jquery-ui-widget,jquery-ui-positi…:3)
at Object.a.event.trigger (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,underscore,jquery-ui-widget,jquery-ui-positi…:9)
at y (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,underscore,jquery-ui-widget,jquery-ui-positi…:4)
at XMLHttpRequest.c (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,underscore,jquery-ui-widget,jquery-ui-positi…:4)
load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,underscore,jquery-ui-widget,jquery-ui-positi…:4 Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user’s experience. For more help, check https://xhr.spec.whatwg.org/.
send @ load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,underscore,jquery-ui-widget,jquery-ui-positi…:4
wplink.min.js?ver=4.7.1:1 Uncaught TypeError: Cannot read property ‘show’ of undefined
at Object.open (wplink.min.js?ver=4.7.1:1)
at HTMLAnchorElement.<anonymous> (backend.min.js?ver=5.0.1:6)
at HTMLAnchorElement.dispatch (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,underscore,jquery-ui-widget,jquery-ui-positi…:3)
at HTMLAnchorElement.r.handle (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,underscore,jquery-ui-widget,jquery-ui-positi…:3)
wplink.min.js?ver=4.7.1:1 Uncaught TypeError: Cannot read property ‘show’ of undefined
at Object.open (wplink.min.js?ver=4.7.1:1)
at HTMLAnchorElement.<anonymous> (backend.min.js?ver=5.0.1:6)
at HTMLAnchorElement.dispatch (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,underscore,jquery-ui-widget,jquery-ui-positi…:3)
at HTMLAnchorElement.r.handle (load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,underscore,jquery-ui-widget,jquery-ui-positi…:3)